class RSpec::Core::BacktraceFormatter

def initialize
  @full_backtrace = false
  patterns = %w[ /lib\d*/ruby/ bin/ exe/rspec ]
  patterns << "org/jruby/" if RUBY_PLATFORM == 'java'
  patterns.map! { |s| Regexp.new(s.gsub("/", File::SEPARATOR)) }
  @system_exclusion_patterns = [Regexp.union(RSpec::CallerFilter::IGNORE_REGEX, *patterns)]
  @exclusion_patterns = [] + @system_exclusion_patterns
  @inclusion_patterns = [Regexp.new(Dir.getwd)]
end